| 摘要 |
PURPOSE:To strengthen especially the lock structure in which the coupling lock part of a battery unit attached/detached to/from a main body is improved. CONSTITUTION:A battery unit is coupled by sliding to a rear face of a main body, fitted removably and locked with the lock member of the main body, a lock release button 52 and a lock member 56 with a lock claw 51 projected on both sides are inserted from the inner side of the lock member insert hole 69 along with the lock member insert hole 69 of the main body having plural link parts 59 inbetween, the lock release button 52 is placed in the middle of the link part 59 of the lock member insert hole 69, the lock claw 51 is projected on both sides of the link part 59, the lock release button 52 and the tip of the lock claw are projected from the rear side of the main body, an elastic body 61 energizing elastically the lock member 56 in the rear side direction is inserted and the opening of the lock member insert hole 69 is closed by a closing member 63.
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